ARC_Lakes_Chemistry_2010-2018_csv

Date Range: 

Monday, July 5, 2010 to Friday, October 5, 2018

Water chemistry data for various lakes near Toolik Research Station, Arctic LTER. Summer 2010 to 2018

Variables

´╗┐SortChem_#
  • Label: ´╗┐SortChem_#
  • Definition: Number used to identify samples - generally not used until later data but column remains with older data to enable comparison
  • Type: Nominal
  • Missing values: None specified
Site
  • Label: Site
  • Definition: Site Name: Name of the lake where measurements were taken. There are discrete sampling sites defined by water depth, generally they are at the point of maximum depth.
  • Type: Nominal
  • Missing values: None specified
Date
  • Label: Date
  • Definition: Date readings were taken on.
  • Type: Date/time
  • Date format: YYYY-MM-DD
  • Missing values:
    • . = missing
Depth (m)
  • Label: Depth (m)
  • Definition: Depth from surface of lake, stream, or soil starting from the surface as 0. This depth corresponds with data in other files (Primary Production, Physical Chemistry)
  • Type: Physical quantity
  • Unit: meter
  • Maximum: 26
  • Minimum: 0
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
Corrected_Chl_ug/l
  • Label: Corrected_Chl_ug/l
  • Definition: Chlorophyll-a corrected for pheophytin (aka Active Chlorophyll)
  • Type: Physical quantity
  • Unit: microgramPerLiter
  • Maximum: 52.68
  • Minimum: -0.90
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
Total_Chl_ug/l
  • Label: Total_Chl_ug/l
  • Definition: Total chlorophyll (uncorrected for pheophytin)
  • Type: Physical quantity
  • Unit: microgramPerLiter
  • Maximum: 65.37
  • Minimum: -0.01
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
Pheo_ug/l
  • Label: Pheo_ug/l
  • Definition: Pheophytin
  • Type: Physical quantity
  • Unit: microgramPerLiter
  • Maximum: 24.47
  • Minimum: -20.20
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
NH4OPA_uM
  • Label: NH4OPA_uM
  • Definition: Ammonium concentrations from OPA fluorometric analysis
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 107.37
  • Minimum: 0.00
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
NH4 Indol_uM
  • Label: NH4 Indol_uM
  • Definition: Ammonium concentrations from indol/ phenol analysis
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 0.00
  • Minimum: 0.00
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
PO4_uM
  • Label: PO4_uM
  • Definition: phosphate concentrations from colormetric analysis
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 9.02
  • Minimum: 0.00
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
NO3_uM
  • Label: NO3_uM
  • Definition: nitrate+nitrite concentrations from colormetric analysis
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 27.33
  • Minimum: -0.07
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
TDN_uM
  • Label: TDN_uM
  • Definition: Total dissolved nitrogen
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 41.50
  • Minimum: 6.30
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
TN_uM
  • Label: TN_uM
  • Definition: Total nitrogen. This value is the sum of TDN and particulate nitrogen
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 33.87
  • Minimum: 7.54
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
TP_uM
  • Label: TP_uM
  • Definition: Total phosphorus. This value is the sum of TDP and particulate phosphorus
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 0.00
  • Minimum: 0.00
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
TDP_uM
  • Label: TDP_uM
  • Definition: Total dissolved phosphorus
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 8.62
  • Minimum: -0.03
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
PP-ug/l
  • Label: PP-ug/l
  • Definition: Particulate phosphorus
  • Type: Physical quantity
  • Unit: microgramPerLiter
  • Maximum: 686.57
  • Minimum: 0.04
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
PP_uM
  • Label: PP_uM
  • Definition: Particulate phosphorus
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 25.30
  • Minimum: 0.04
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
PN-ug/l
  • Label: PN-ug/l
  • Definition: Particulate nitrogen
  • Type: Physical quantity
  • Unit: microgramPerLiter
  • Maximum: 330.96
  • Minimum: 0.43
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
PN_uM
  • Label: PN_uM
  • Definition: Particulate nitrogen
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 23.63
  • Minimum: 0.04
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
PC-ug/l
  • Label: PC-ug/l
  • Definition: Particulate carbon
  • Type: Physical quantity
  • Unit: microgramPerLiter
  • Maximum: 4877.63
  • Minimum: -16.45
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
PC_uM
  • Label: PC_uM
  • Definition: Particulate carbon
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 406.10
  • Minimum: -1.37
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
DOC_uM
  • Label: DOC_uM
  • Definition: Dissolved organic carbon
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 1023
  • Minimum: 61
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
DIC_uM
  • Label: DIC_uM
  • Definition: Dissolved inorganic carbon
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 4664
  • Minimum: 45
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
Alk_meqL
  • Label: Alk_meqL
  • Definition: Total alkalinity (carbonate and non-carbonate alkalinity)
  • Type: Physical quantity
  • Unit: milliequivalentPerLiter
  • Maximum: 4.003
  • Minimum: 0.006
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
SO4_uM
  • Label: SO4_uM
  • Definition: Dissolved sulfate concentration
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 0.00
  • Minimum: 0.00
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
Cl_uM
  • Label: Cl_uM
  • Definition: Dissolved chloride concentration
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 0.00
  • Minimum: 0.00
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
Ca_uM
  • Label: Ca_uM
  • Definition: Dissolved calcium concentration
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 1102.20
  • Minimum: 83.90
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
Mg_uM
  • Label: Mg_uM
  • Definition: Dissolved magnesium concentration
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 359.70
  • Minimum: 33.70
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
Na_uM
  • Label: Na_uM
  • Definition: Dissolved sodium concentration
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 46.70
  • Minimum: 17.20
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
K_uM
  • Label: K_uM
  • Definition: Dissolved potassium concentration
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 19.70
  • Minimum: 6.21
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
Si_uM
  • Label: Si_uM
  • Definition: Silica concentration
  • Type: Physical quantity
  • Unit: micromolePerLiter
  • Maximum: 66.70
  • Minimum: 2.70
  • Precision: Not specified
  • Missing values:
    • . = Missing or Not Measured
    • NA = Missing or Not Measured
Notes
  • Label: Notes
  • Definition: Notes specific to the sample
  • Type: Nominal
  • Missing values: None specified
Data Source Details

Header lines: 

4

Orientation: 

Column

Quote character: 

"

Field delimiter: 

,

Record delimiter: 

\r\n

Number of Records: 

3734